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authorH.J. Lu <hjl.tools@gmail.com>2015-10-15 06:26:38 -0700
committerH.J. Lu <hjl.tools@gmail.com>2015-10-15 06:26:50 -0700
commitb994fd793799590f70ceb9a96f135bc2390bb4f3 (patch)
tree188a15c91ce08307d33801b0d9debb9ad45a43a6 /sysdeps
parent98ad631cd0a77205734abf4f2bb368a8560a08cf (diff)
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Remove i386/epoll_pwait.S
Only i386 implements epoll_pwait in assembly code withot cancellation support. All other architectures implement epoll_pwait in epoll_pwait.c with int epoll_pwait (int epfd, struct epoll_event *events, int maxevents, int timeout, const sigset_t *set) { return SYSCALL_CANCEL (epoll_pwait, epfd, events, maxevents, timeout, set, _NSIG / 8); } Although there is no test for epoll_pwait in glibc, since SYSCALL_CANCEL works on i386 and epoll_pwait.c works for other architectures, it is safe to assume that epoll_pwait.c with SYSCALL_CANCEL also works on i386. [BZ #19137] * sysdeps/unix/sysv/linux/i386/Makefile (CFLAGS-epoll_pwait.c): Add -fomit-frame-pointer. * sysdeps/unix/sysv/linux/i386/epoll_pwait.S: Remove file.
Diffstat (limited to 'sysdeps')
-rw-r--r--sysdeps/unix/sysv/linux/i386/Makefile1
-rw-r--r--sysdeps/unix/sysv/linux/i386/epoll_pwait.S78
2 files changed, 1 insertions, 78 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/Makefile b/sysdeps/unix/sysv/linux/i386/Makefile
index 49ccf3e..b484217 100644
--- a/sysdeps/unix/sysv/linux/i386/Makefile
+++ b/sysdeps/unix/sysv/linux/i386/Makefile
@@ -4,6 +4,7 @@ default-abi := 32
ifeq ($(subdir),misc)
sysdep_routines += ioperm iopl vm86
# %ebp may be used to pass the 6th argument to syscall.
+CFLAGS-epoll_pwait.c += -fomit-frame-pointer
CFLAGS-mmap.c += -fomit-frame-pointer
CFLAGS-mmap64.c += -fomit-frame-pointer
endif
diff --git a/sysdeps/unix/sysv/linux/i386/epoll_pwait.S b/sysdeps/unix/sysv/linux/i386/epoll_pwait.S
deleted file mode 100644
index 65cfb98..0000000
--- a/sysdeps/unix/sysv/linux/i386/epoll_pwait.S
+++ /dev/null
@@ -1,78 +0,0 @@
-/* Copyright (C) 2007-2015 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#include <sysdep.h>
-#define _ERRNO_H
-#include <bits/errno.h>
-#define _SIGNAL_H
-#include <bits/signum.h>
-
-
- .text
-ENTRY (epoll_pwait)
-
-#ifdef __NR_epoll_pwait
-
- /* Save registers. */
- pushl %ebp
- cfi_adjust_cfa_offset (4)
- pushl %ebx
- cfi_adjust_cfa_offset (4)
- pushl %esi
- cfi_adjust_cfa_offset (4)
- pushl %edi
- cfi_adjust_cfa_offset (4)
- cfi_rel_offset (edi, 0)
- cfi_rel_offset (esi, 4)
- cfi_rel_offset (ebx, 8)
- cfi_rel_offset (ebp, 12)
-
- movl 20(%esp), %ebx
- movl 24(%esp), %ecx
- movl 28(%esp), %edx
- movl 32(%esp), %esi
- movl 36(%esp), %edi
- movl $_NSIG/8, %ebp
- movl $__NR_epoll_pwait, %eax
-
- ENTER_KERNEL
-
- /* Restore registers. */
- popl %edi
- cfi_adjust_cfa_offset (-4)
- cfi_restore (edi)
- popl %esi
- cfi_adjust_cfa_offset (-4)
- cfi_restore (esi)
- popl %ebx
- cfi_adjust_cfa_offset (-4)
- cfi_restore (ebx)
- popl %ebp
- cfi_adjust_cfa_offset (-4)
- cfi_restore (ebp)
-
- /* If 0 > %eax > -4096 there was an error. */
- cmpl $-4096, %eax
- ja SYSCALL_ERROR_LABEL
-
- /* Successful; return the syscall's value. */
-#else
- movl $-ENOSYS, %eax
- jmp SYSCALL_ERROR_LABEL
-#endif
- ret
-PSEUDO_END (epoll_pwait)